A report on the microscopic objects found in cholera evacuations / by Timothy Richards Lewis.
- Timothy Richards Lewis
- Date:
- 1870
Licence: Public Domain Mark
Credit: A report on the microscopic objects found in cholera evacuations / by Timothy Richards Lewis. Source: Wellcome Collection.
Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.
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![2 A SUMMARV OF HALLIKk's VUCWS 1867. These were examiued microscopically and found to contain:— 1. Cysts of a yellow or broAYnish colour, wliicli he for some time believed to be the fruc- Discovery of cysts in cho- tilication of iiroci/slis : somc of tlu'se lera discharges, which seem- i, .,1 „ , „ • ' i ji- i ed at first sight to present ^i'''^^ ^. ^cry, UTeojular Outline, and at no organised structure. first siglit scemcd to posscss uo Organic structm^e, caution being necessary not to confound them with masses of fat; application of pre'ssiu-e was, however, found sufficient to discriminate between them. A drawing is given of some of these in a swelled, broken up condition (Pig. i, 1). 2. Here and there a few other cysts were seen, con- sidered to be of the same kind as the organise*'!^*^ ^^^^ distinctly fQ^.ggQjj^g . ^]^gy ^^g^g Sphcrical Or OVal cysts vaiying considerably in size, enclosing a number of yellowish shining spores; the spores also varying in size, as may be seen by a reference to the accompanying figures (Fig. i, 2). 3. Groups of swollen gelatinous spores surrounded l3y finely molecular matter ( Fig. i, 3). sSeTconditirn!°'' ^ Others appear granular, and some show indication of fission. 4. Micrococcus.—The molecular matter just alluded to, supposed to have originated from micrococcus'! ^ho brcaldng up of the plasma m the spore, a little heap often being observed, corresponding to the previously existing spore, called a micrococcus colony (Fig. i, 4 a), which at b is still further broken up; at c a group of colonies is seen corres- ponding to the mass of spores previously contained in a cyst whose walls have disappeared. The minute protoplasmic molecules constituting these colonies were seen to aclhere to various objects in the fluid, and espe- Action of micrococcus on particlcs of epithelium, epithelium. „'',„ n ji'i- m fact feeding upon them; this being invariably the way in which vegetable parasites first attack animal tissues. In the midst of these molecules larger ones were observed (Fig. i, 5), which have Development of microooc- figured in a still morc advanced stage as torula-like formations at 6. » This condition being, according to Professor Halher, the tran- sition stage to the development of the higher forms of fungi. A series of cultivations was carried out in order to prove](https://iiif.wellcomecollection.org/image/b24749515_0022.jp2/full/800%2C/0/default.jpg)
